Figure F16. Composite digital images, sediment lightness (L*), natural gamma radiation (NGR), magnetic susceptibility (MS), and red-green-blue color variations across the Eocene/Oligocene boundary interval (67.45–76.7 mbsf [74.32–83.57 mcd]). The boundary occurs in the lithologic transition from brown clay to light brown nannofossil ooze and is reflected in an increase in L* and a decrease in MS and NGR.

Figure F16. Composite digital images, sediment lightness (L*), natural gamma radiation (NGR), magnetic susceptibility (MS), and red-green-blue color variations across the Eocene/Oligocene boundary interval (67.45–76.7 mbsf [74.32–83.57 mcd]). The boundary occurs in the lithologic transition from brown clay to light brown nannofossil ooze and is reflected in an increase in L* and a decrease in MS and NGR.